Levens, A. S., & Edstrom, A. E. (1960). Problems in engineering drawing (Series 5.). McGraw-Hill.
Chicago Style (17th ed.) CitationLevens, A. S., and Alfred E. Edstrom. Problems in Engineering Drawing. Series 5. N.Y.: McGraw-Hill, 1960.
MLA (8th ed.) CitationLevens, A. S., and Alfred E. Edstrom. Problems in Engineering Drawing. Series 5. McGraw-Hill, 1960.
Warning: These citations may not always be 100% accurate.